BizRate allows you to search for products from hundreds of online vendors. Features include merchant ratings, reviews, tax and shipping information, as well as a list of your own most searches and recently viewed products. Also powers some of the results provided by Lycos Shopping. An honorable mentionwinner for Best Shopping Search Engine from Search Engine Watch in 2002.

Major comparison shopping search engine for the United Kingdom and other European countries. According to the company, 16 out of the top 20 e-commerce sites in the UK are currently advertising through Kelkoo. Advertisers have the opportunity to reach customers in all nine European countries in which Kelkoo operates. (see links at bottom of the Kelkoo home page).

One of oldest comparison shopping sites on the Web, featuring the ability to search for products from thousands of merchants or browse by product category. An honorable mentionwinner for Best Shopping Search Engine from Search Engine Watch in 2002.

Comparison shopping search engine with ability to see member ratings of products. Available in English or Spanish, including specialized product searches for retailers in Mexico and Brazil. An honorable mentionwinner for Best Shopping Search Engine from Search Engine Watch in 2002.

Shopping search engine that pulls back likely product pages from across the web, rather than relying on merchant feeds. It sends your query out to one of four major search engines (Google, AllTheWeb, Inktomi or Teoma) but then should only list pages where you can actually buy a product you are interested in. Product reviews, magazine articles, discussions and opinions are filtered out. The site launched in September 2002.

Comparison shop in different categories such as books, electronics and sporting goods. Promotes itself as "unbiased" because it does not accept money from vendors to be listed, which is commonplace in the shopping search engine space.

Specialized shopping search engines make it easy for searchers to research and buy products -- but they're also a powerful and cost-effective customer acquisition channel for merchants. A report out of the Shopping Search panel at the March 2003 Search Engine Strategies show. A longer, more detailed version of the article that covers shopping search submission and optimization is available for Search Engine Watch members.

A survey of 1,100 DealTime.com shopping search engine users in late-December 2002 found that the main reason for using shopping search services was to compare prices quickly (73 percent), followed by wanting to compare products (54 percent) and to find stores selling the products they were interested in (45 percent). Story also cites stats showing which search engines sent shopping search engines the most visitors: Google, Yahoo, MSN and AOL.

Google's shopping search engine gets taken for a test ride, and while Business Week writer Alex Salkever acknowledges the service is still under development, he comes away far more impressed with competing services NexTag and PriceGrabber